A large bay between Nova Scotia and New Brunswick?
The large bay between Nova Scotia and New Brunswick is the Bay of Fundy. The Bay of Fundy has the highest tides in the world.
Nova Scotia only has one "border", which is the division between Nova Scotia and New Brunswick. This is purely ceremonial/political, as there is no border checkpoint, customs, immigration or other facilities normally associated with a "border". Except for the narrow band of land that connects Nova Scotia and New Brunswick, the rest of Nova Scotia is surrounded by water. The nearest international borders would be somewhere in the ocean between Nova Scotia and the USA…
Just one! The Atlantic Ocean surrounds Nova Scotia (the Bay of Fundy between us and New Brunswick and the Northumberland Straight between us and PEI. However both are still parts of the Atlantic Ocean). I should mention though that Nova Scotia is not an island and we are connected by land to New Brunswick.